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var extend = require('extend'),
_ = require('lodash');
var TYPE_TO_SOURCE = {
'geoname': 'gn',
'osmnode': 'osm',
'osmway': 'osm',
'admin0': 'qs',
'admin1': 'qs',
'admin2': 'qs',
'neighborhood': 'qs',
'locality': 'qs',
'local_admin': 'qs',
'osmaddress': 'osm',
'openaddresses': 'oa'
};
/*
* This doesn't include alias layers such as coarse
*/
var TYPE_TO_LAYER = {
'geoname': 'venue',
'osmnode': 'venue',
'osmway': 'venue',
'admin0': 'country',
'admin1': 'region',
'admin2': 'county',
'neighborhood': 'neighbourhood',
'locality': 'locality',
'local_admin': 'localadmin',
'osmaddress': 'address',
'openaddresses': 'address'
};
var SOURCE_TO_TYPE = {
'gn' : ['geoname'],
'geonames' : ['geoname'],
'oa' : ['openaddresses'],
'openaddresses' : ['openaddresses'],
'qs' : ['admin0', 'admin1', 'admin2', 'neighborhood', 'locality', 'local_admin'],
'quattroshapes' : ['admin0', 'admin1', 'admin2', 'neighborhood', 'locality', 'local_admin'],
'osm' : ['osmaddress', 'osmnode', 'osmway'],
'openstreetmap' : ['osmaddress', 'osmnode', 'osmway']
};
/**
* This does not included alias layers, those are built separately
*/
var LAYER_TO_TYPE = {
'venue': ['geoname','osmnode','osmway'],
'address': ['osmaddress','openaddresses', 'geoname'],
'country': ['admin0', 'geoname'],
'region': ['admin1', 'geoname'],
'county': ['admin2', 'geoname'],
'locality': ['locality', 'geoname'],
'localadmin': ['local_admin'],
'neighbourhood': ['neighborhood', 'geoname']
};
var LAYER_ALIASES = {
'coarse': ['admin0','admin1','admin2','neighborhood','locality','local_admin']
};
var LAYER_WITH_ALIASES_TO_TYPE = extend({}, LAYER_ALIASES, LAYER_TO_TYPE);
/*
* derive the list of types, sources, and layers from above mappings
*/
var TYPES = Object.keys(TYPE_TO_SOURCE);
var SOURCES = Object.keys(SOURCE_TO_TYPE);
var LAYERS = Object.keys(LAYER_TO_TYPE);
var sourceAndLayerToType = function sourceAndLayerToType(source, layer) {
return _.intersection(SOURCE_TO_TYPE[source], LAYER_WITH_ALIASES_TO_TYPE[layer]);
};
module.exports = {
types: TYPES,
sources: SOURCES,
layers: LAYERS,
type_to_source: TYPE_TO_SOURCE,
type_to_layer: TYPE_TO_LAYER,
source_to_type: SOURCE_TO_TYPE,
layer_to_type: LAYER_TO_TYPE,
layer_with_aliases_to_type: LAYER_WITH_ALIASES_TO_TYPE,
source_and_layer_to_type: sourceAndLayerToType
};